Green Construction Standard Parts Dimensional Stability 640 MPa-1080 MPa Yield Strength Customized Steel Structure Metal Precision Fasteners

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Green Construction Standard Parts Dimensional Stability 640 MPa-1080 MPa Yield Strength Customized Steel Structure Metal Precision Fasteners

Customization:	Available
Connection Form:	Bolt Connection
Construction Member:	Steel Beam

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Product Description

📋 Basic Product Information

Model NO.

Steel Structure

Grade

Carbon Structural Steel

Molding Method

Cast Steel

Residential Wall

Bottom Wall Beam

Standard

AISI

Steel Type

High-Strength Steel

Product Name

Steel Structure Fasteners

Function

Connecting Steel Members

Material

High-Strength Carbon/Alloy Steel

Tensile Strength

800 MPa-1035 MPa

Yield Strength

640 MPa-1080 MPa

Surface

Hot-DIP Galvanizing

Temp. Range

-40°c to +150°c

Capacity

5,000,000 Pcs/Year

⚙️ Product Description

Structural Fasteners

Structural fasteners are strong, heavy-duty fasteners necessary for the construction of structures that include steel-to-steel connections. They are essential when one metal structure needs to be connected securely to another.

Typical applications include bridge and building construction for connecting metal beams and girders. To ensure reliability, these fasteners are made of quenched and tempered steel.

Commonly Used Types

Heavy Hex Bolts: Larger and thicker than standard hex bolts. Specifications A325 and A490 are most suitable.
Heavy Hex Nuts: Known as finish nuts, providing both strength and a finished professional look.
Tension Control Bolts: Adept at handling vibrations and preventing load reversals, eliminating slips in connections.

Bolt Type: Large Size Hex Bolt, Torsion Shear Bolt, and other fasteners

Standard: GB1228 / GB3632

Strength Grade: 10.9S, 12.9S

Surface Treatment: Quench, Hot-dip galvanizing, DACROMET

💎 Role & Best Practices

Engineering Roles

Load Distribution: Ensuring even distribution of forces across the structure.
Structural Stability: Secure connections that resist environmental stress.
Durability: Preventing wear and tear in critical areas.

Choosing Fasteners

Material Compatibility: Opt for stainless or galvanized steel to resist corrosion.
Load-Bearing Capacity: Match strength with project requirements.
Compliance: Ensure fasteners meet safety and quality certifications.

📊 Technical Specifications

Large Size Hex Bolt Dimensions

d	M12	M16	M20	M22	M24	M27	M30
S	21	27	34	36	41	46	50
K	7.5	10	12.5	14	15	17	18.7
L	35-75	45-130	50-160	55-220	60-240	65-260	70-260

Structural Bolt Tensile Load

Strength Level	M16	M20	M22	M24	Hardness
8.8S	130-162	203-252	251-312	293-364	HRC24-HRC31
10.9S	163-195	255-304	315-376	367-438	HRC33-HRC39

📸 Manufacturing Gallery

❓ Frequently Asked Questions

Q1: How do I get a manufacturing quote?

We respond to RFQs within 24 business hours. Our quotes include instant pricing and detailed delivery timelines to help you plan your project effectively.

Q2: Who is responsible for managing my project?

Each project is assigned a dedicated technical sales manager and an engineer who oversee everything from the initial quote to final delivery of the steel components.

Q3: What is the minimum order quantity (MOQ)?

We do not have a strict minimum order quantity requirement. We support projects of all sizes, from initial custom production to bulk inspection and shipment.

Q4: How are import taxes calculated?

Import duties vary by country and depend on the goods' Harmonized System (HS) code. We provide the necessary documentation to assist with international customs adherence.

Q5: How can I ensure an accurate quotation for custom parts?

Please provide specific technical demands, drawings, or product pictures. Our team will customize a solution based on your requirements and provide a detailed price breakdown.

Q6: What quality standards do your fasteners follow?

Our products comply with international standards including ISO 898-1, ASTM A325/A490, and EN 14399 to ensure maximum safety and structural integrity.